Sawing-machine for rails and the like.



F. IBACH.

SAWING MACHINE FOR RAILS AND THE LIKE.

APPLICATION FILED SEPT.17,1913.

1,120,718. Patented Dec. 15, 1914.

1H: NORRIS PETERS co PHOIOVLVTHO WASHING FUN o c FRITZ IBACH, 0F BREIIENBRUCH, REMSCI-IIED-HASTEN, GERMANY.

SAWING-MACHINE FOR RATLS AND THE LIKE.

Specification of Letters Patent.

Patented Dec. 15, 1914.

Application filed September 17, 1913. Serial No. 790,147.

1/ b all whom it may concern Be it known that I, FRITZ IBACH, a subject of the King of Prussia, residing at Breitenbruch, Remscheid-Hasten, in Germany, have invented certain new and useful Improvements in Sawing-Machines for Rails and the like, of which the following is a specification.

The subject of this invention is a machine for sawing metal objects, as for example rails, iron beams and the like. In order that one is not compelled always to unfasten the strong and heavy connection between the sawing machine and the rail, as, for in stance, when a train is passing, the machine is divided so that it consists of a wide underframe with powerful fastening means for engaging the rail, and an upper-frame with the driving gear and the saw, which can be easily detached from the under-frame. The machine is further provided with an arrangement for regulating the feed of the saw frame in a predetermined manner for the head, web and foot, as separately illus trated and described.

The invention is illustrated in the accompanying drawing, in Which Figure 1 is a perspective elevation of the entire machine. Fig. 2 is a perspective elevation showing amodification of the feed mechanism.

The under-frame 11 consists of a plate on the front part of which are arranged clamping pieces 12 for fixing the frame to the rail 13. At the other end the part 11 is provided with a pair of outer lugs or bearings 14, and a pair of inner lugs or bearings 1 1 The machine frame 16 proper is correspondingly provided with an outer leg or bearing member 15 and an inner leg or bearing member 15 which members are so spaced, as to be alined with the outer and inner lugs 14 and 14 respectively. The outer member 15 is fulcrumed to lugs 14 by a bolt 17, carrying a nut, while the inner member 15 may be removably connected to lugs 14 by a pin 17 which is adapted to be held in place by a cotter. By the construction described, the frame 16 may upon the withdrawal of pin 17 be readily tilted outward on fulcrum 17, while it may be locked in its upright or operative position, by being swung inward, and having its leg 15 secured to lugs 14 by the insertion of the pin 17 The advantage of the invention is most apparent in connection with the two fasten ings 12 and 17, as the clamps 12 have been designed purely with a view to strength, while the lugs and eyes 14:, 1 1 and 15, 15 and bolt 17 are designed with a View to rapid release, whereas formerly both these requirements had to be met at one place of fastening. The incompatibility of these two requirements was never successfully overcome, because a considerable time is always required for tightening and loosening two nuts, and frequently diffculties are met with, when loosening screws which have been tightened too much. On the other hand, by distributing the requirements over two fastening arrangements at different places, one of these arrangements is adapted solely for heavy fastening, and the other solely for easy release. As has been shown, this release can be effected much more rapidly than hitherto, but nevertheless the construction is absolutely secure. The upper frame 16 is moreover fitted with a carriage 18 which is arranged to slide vertically in the wellknown manner, and in which the horizontally sliding carriage 19 with the saw frame 20 may be moved to and fro by lever 21. The fixing of the frame to the rail is effected by the clamps 12 and the disconnection, during the passing of trains, by means of bolt 17 and by turning back the upper frame. The readjustment of the released upper frame 16 can also be effected very rapidly, and the saw reenters the out immediately, without requiring long manipulation, be-

cause the lower frame has remained firmly connected with the rail.

Hitherto, the adjustment of the feed speeds for the head, web and foot of the rail has been left to the judgment of the worker, and there was consequently no guarantee that the work would be carried out in every single case with the most advantageous feed speed. The feed arrangement illustrated in Fig. 1 is based on the observation that regularly, when cutting through parts of similar sections, the same adjustments of the feed abutment must be effected. As there are only three different positions, the abutment is provided, according to the invention, with a triple sub-division, and each of these divisions corresponds to the speed which has been found by experiment to be the most advantageous. Consequently only one adjustment for the respective speed is possible in each case.

According to Fig. 1, a bar 22 connected with the saw frame holder, is provided with three notches 23, into which fits a movable abutment 24. An abutment 25 is firmly fixed to this bar 22. :When moving the saw to and fro, the abutment 24: pushes, .at each forward stroke, the operating lever 26 to the right, the length of its path being dependent on the adjustment of the abutment; during the return stroke the fixed abutment 25 pushes back the lever. A pawl 28 engaging with a ratchet wheel rotates a bevel pinion 29, and with it a screw spindle 30 which moves the vertically guided carriage 18.

A modified arrangement for the same purpose is shown in Fig. 2. In this case three abutments 28 are fitted to .an adjustable slide 81, one end of which has three steps. Movement transversely of the steps, placed side by side, is efiected by means of a toothed segment 32 which is pivoted to a bracket 33. The bracket itself is screwed to the holder of the saw frame; it is provided with a dove-tailed nut in which the slide 31 is guided by means of asuitable wedge. Preferably each abutment is given a designation which corresponds to the work for which it is destined, that isto say, in the case of rails head, web, and foot In order to make miter cutting possible, the distance pins 34: may be placed in diiferent holes specially provided, in such a manner that the rail is fixed at a certain angle to which the clamping pieces may be adjusted without difficulty by shifting and turning the same in their slotted guides.

What I claim as my invention and desire to secure by Letters Patent of the United States is 1. A metal sawing machine for rails, comprising a base, means for clamping the rail to be sawed to the base, a tiltable frame fulcrumed to the base, releasable means for securing said frame to the base in an upright position, and saw-guiding means mounted on the frame.

2. A metal sawing machine for rails, comprising a base, means for clamping the rail to be sawed to the base, an outer bearing andan inner bearing on the base, a frame having an outer leg fulcrumed to the outer bearing and an inner lug adapted to be releasably secured to the inner bearing, and saw-carrying means mounted on the frame.

to be sawed to the base, a'frame tiltably secured to the base, a vertically movable saw carriage mounted on the frame, means for feeding said carriage, a horizontally movable saw carriage engaging the vertical carriage, a bar on the horizontal carriage, an adjustable stop on said bar, and means operable by said stop for controlling the feed of the vertical carriage.

5. A metal sawing machine for rails, comprising a base, means for clamping the rail to be sawed tothe base, a frame tiltably secured to the base, a vertically movable saw carriage mounted on the frame, means for feeding said carriage, a horizontally movable saw carrlage engaging the vertical carriage, a bar on the horizontal carriage, an

adjustable stop on said bar, a lever adapted to be engaged by the stop, a pawl pivoted to. the lever, a ratchet wheel engaged by the pawl, and means for intergearing said ratchet wheel with the vertical carriage feeding means.

FRITZ IBAGH. [L.s.] Witnesses: ALBERT'NUFER, HELEN NUFER.

copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

